74FCT534 [NSC]
Octal D Flip-Flop with TRI-STATE Outputs; 八路D触发器具有三态输出
| 型号： | 74FCT534 |
| 厂家： | 
National Semiconductor |
| 描述： | Octal D Flip-Flop with TRI-STATE Outputs |
| 文件： | 总8页 (文件大小：132K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
April 1993
74FCT534
Octal D Flip-Flop with TRI-STATE Outputs
É
General Description
Features
Y
g
reduced to 40.0 mA and 2.5 mA
OZ
I
and I
The ’FCT534 is a high-speed, low-power octal D-type flip-
flop featuring separate D-type inputs for each flip-flop and
TRI-STATE outputs for bus-oriented applications. A buff-
ered Clock (CP) and Output Enable (OE) are common to all
flip-flops. FACTTM FCT utilizes NSC quiet series technology
to provide improved quiet output switching and dynamic
threshold performance.
CC
respectively
Y
NSC 54/74FCT534 is pin and functionally equivalent to
IDT 54/74FCT534
Y
Y
Y
Y
Y
Y
Y
Edge-triggered D-type inputs
Buffered positive edge-triggered clock
Input clamp diodes to limit bus reflections
TTL/CMOS input and output level compatible
FACT FCT features GTOTM output control and undershoot
corrector in addition to a split ground bus for superior per-
formance. The ’FCT534 is the same as the ’FCT374 except
that the outputs are inverted.
e
CMOS power levels
I
48 mA
OL
t
ESD immunity
4 kV typ
Logic Symbols
Connection Diagram
Pin Assignment
for DIP and SOIC
IEEE/IEC
TL/F/10665–1
TL/F/10665–3
TL/F/10665–2
Pin Names
Description
D –D
0
Data Inputs
7
CP
OE
Clock Pulse Input
TRI-STATE Output Enable Input
Complementary TRI-STATE Outputs
O –O
0
7
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
FACTTM and GTOTM are trademarks of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
TL/F/10665
RRD-B30M105/Printed in U. S. A.
Functional Description
The ’FCT534 consists of eight edge-triggered flip-flops with
individual D-type inputs and TRI-STATE complementary
outputs. The buffered clock and buffered Output Enable are
common to all flip-flops. The eight flip-flops will store the
state of their individual D inputs that meet the setup and
hold times requirements on the LOW-to-HIGH Clock (CP)
transition. With the Output Enable (OE) LOW, the contents
of the eight flip-flops are available at the outputs. When the
OE is HIGH, the outputs go to the high impedance state.
Operation of the OE input does not affect the state of the
flip-flops.
Logic Diagram
TL/F/10665–5
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
Function Table
Inputs
OE
Output
O
CP
D
L
L
L
L
L
H
L
L
H
L
X
X
O
0
X
H
Z
e
e
e
H
L
HIGH Voltage Level
LOW Voltage Level
Immaterial
X
e
L
LOW-to-HIGH Clock Transition
High Impedance
e
Z
e
O
0
Value stored from previous clock cycle
2
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Recommended Operating
Conditions
Supply Voltage (V
74FCT
)
CC
4.75V to 5.25V
Terminal Voltage with Respect
)
Input Voltage
0V to V
CC
CC
to GND (V
74FCT
TERM
Output Voltage
0V to V
b
a
0.5V to 7.0V
Operating Temperature (T )
A
74FCT
Temperature Under Bias (T
74FCT
)
BIAS
b
a
0 C to 70 C
§
§
b
a
55 C to 125 C
§
§
Junction Temperature (T )
J
PDIP
Storage Temperature (T
74FCT
)
STG
140 C
§
b
a
55 C to 125 C
§
§
120 mA
Note: All commercial packaging is not recommended for applications requir-
a
ing greater than 2000 temperature cycles from 40 C to 125 C.
DC Output Current (I
OUT
)
b
§
§
Note 1: Absolute maximum ratings are those values beyond which damage
to the device may occur. Exposure to absolute maximum rating conditions
for extended periods may affect reliability. The databook specifications
should be met, without exception, to ensure that the system design is reli-
able over its power supply, temperature, and output/input loading variables.
DC Characteristics for ’FCTA Family Devices
CC
e
specified for the appropriate device type: Com: V
Typical values are at V
5.0V, 25 C ambient and maximum loading. For test conditions shown as Max, use the value
§
e
e
a
0 C to 70 C; V
e
b
V 0.2V.
CC
g
5.0V 5%, T
§
§
CC
A
HC
74FCTA
Typ
Symbol
Parameter
Units
Conditions
Min
Max
V
V
Minimum High Level
Input Voltage
IH
2.0
V
V
Maximum Low Level
Input Voltage
IL
0.8
e
e
e
e
V
I
I
I
Input High Current
5.0
5.0
V
CC
V
CC
V
CC
Max
Max
Max
V
V
IH
I
CC
mA
mA
e
2.7V (Note 2)
I
b
b
e
e
Input Low Current
5.0
5.0
V
V
0.5V (Note 2)
GND
IL
I
I
e
V
CC
Maximum TRI-STATE Current
2.5
2.5
V
V
V
V
OZ
O
O
O
O
e
e
e
2.7V (Note 2)
0.5V (Note 2)
GND
mA
b
b
2.5
2.5
b
b
e
e
e
e
e b
Min; I 18 mA
N
V
Clamp Diode Voltage
Short Circuit Current
0.7
1.2
V
V
V
V
IK
CC
CC
CC
b
b
e
Max (Note 1); V
O
I
60
120
mA
GND
e b
0.2V or V ; I
HC OH
OS
e
V
Minimum High Level
Output Voltage
2.8
3.0
3V; V
32 mA
300 mA
15 mA
OH
OL
IN
V
V
e b
e b
V
HC
V
CC
V
V
Min
I
I
CC
OH
e
2.4
4.3
V
or V
IL
IN
IH
OH
e
e
e
3V; V
IN
Min
e
0.2V or V ; I 300 mA
HC OL
V
Maximum Low Level
Output Voltage
GND
0.2
V
CC
e
e
GND
0.3
0.2
0.5
V
V
I
I
300 mA
CC
OL
e
V
or V
IL
48 mA
IN
IH
OL
3
DC Characteristics for ’FCT Family Devices (Continued)
e
specified for the appropriate device type: Com: V
Typical values are at V
5.0V, 25 C ambient and maximum loading. For test conditions shown as Max, use the value
§
CC
e
e
a
0 C to 70 C; V
e
b
V 0.2V.
CC
g
5.0V 5%, T
§
§
CC
A
HC
74FCT
Typ
Symbol
Parameter
Units
Conditions
Min
Max
e
I
Maximum Quiescent
Supply Current
V
V
Max
CC
CC
t
s
0.2V
1.0
0.5
40.0
mA
V
, V
HC IN
IN
e
f
I
0
e
DI
Quiescent Supply Current;
TTL Inputs HIGH
V
V
Max
CC
CC
2.0
mA
e
3.4V (Note 3)
IN
t
s
e
Outputs Open
I
Dynamic Power
V
Max
V
V
V
HC
0.2V
CCD
CC
IN
Supply Current (Note 4)
IN
0.15
0.25
mA/MHz
e
OE
GND
One Input Toggling
50% Duty Cycle
t
s
e
Outputs Open
I
Total Power Supply
Current (Note 6)
V
CC
Max
V
V
V
HC
C
IN
1.5
1.8
3.0
4.0
6.0
0.2V
IN
e
e
f
10 MHz
GND
CP
OE
e
f
I
5 MHz
e
e
V
V
3.4V
GND
IN
One Bit Toggling
50% Duty Cycle
IN
mA
t
s
(Note 5)
e
Outputs Open
V
V
V
HC
IN
V
CC
Max
0.2V
IN
7.8
e
e
OE
GND
f
f
10 MHz
CP
e
2.5 MHz
I
e
e
V
V
3.4V
GND
IN
Eight Bits Toggling
50% Duty Cycle
5.0
16.8
IN
V
H
Input Hysteresis
on Clock Only
200
mV
Note 1: Maximum test duration not to exceed one second, not more than one output shorted at one time.
Note 2: This parameter guaranteed but not tested.
e
Note 3: Per TTL driven input (V
3.4V); all other inputs at V
or GND.
CC
IN
Note 4: This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
Note 5: Values for these conditions are examples of the I formula. These limits are guaranteed but not tested.
CC
e
e
a
a
I
INPUTS DYNAMIC
Note 6: I
I
I
C
QUIESCENT
a
a
a
I (f /2 f
CCD CP I
I
I
I
DI
D
H
N
N )
I
C
CC
CC
T
e
Quiescent Current
CC
e
e
3.4V)
DI
CC
Power Supply Current for a TTL High Input (V
IN
e
e
D
Duty Cycle for TTL inputs High
H
T
N
Number of Inputs at D
H
e
I
Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
Clock Frequency for Register Devices (Zero for Non-Register Devices)
CCD
e
f
CP
e
f
I
Input Frequency
e
N
Numbers of Inputs at f
I
I
All currents are in milliamps and all frequencies are in megahertz.
4
AC Electrical Characteristics
74FCT
74FCT
e a
e
e
50 pF
T
25 C
§
5.0V
T
, V
Com
A
A
CC
e
Symbol
Parameter
Units
V
C
L
CC
Min
Typ
6.5
9.0
6.0
1.0
0.5
4.0
Max
10.0
12.5
8.0
(Note 1)
t
t
Propagation Delay
PLH
1.5
ns
ns
ns
ns
ns
ns
C
P
to On
PHL
t
t
Output Enable
Time
PZH
1.5
1.5
2.0
1.5
7.0
PZL
t
t
Output Disable
Time
PHZ
PLZ
t
t
t
Set Up Time High or Low
Dn to CP
s
Hold Time High or Low
Dn to CP
h
w
CP Pulse Width
High or Low
Note 1: Minimum limits guaranteed but not tested on propagation delays.
e a
e
I
Capacitance T
25 C, f
§
1.0 MHz
Typ
A
Symbol
Parameter
Max
Units
pF
Conditions
e
C
C
Input Capacitance
Output Capacitance
6
8
10
12
V
V
0V
IN
IN
e
pF
0V
OUT
OUT
Note: This parameter is measured at characterization but not tested.
for 74FCT only.
C
OUT
Ordering Information
The device number is used to form part of a simplified purchasing code where a package type and temperature range are
defined as follows:
74FCT 534
P
C
QR
Temperature Range Family
Special Variations
e
e
e
74FCT
Device Type
Package Code
Commercial TTL-Compatible
X
QR
Devices shipped in 13 reels
×
Commercial grade device
with burn-in
Temperature Range
e
e
e
P
S
Plastic DIP
Small Outline (SOIC)
a
Commercial (0 C to 70 C)
C
§
§
5
6
Physical Dimensions inches (millimeters)
20-Lead Small Outline Integrated Circuit (S)
NS Package Number M20B
7
Physical Dimensions inches (millimeters) (Continued)
20-Lead Plastic Dual-In-Line Package (P)
NS Package Number N20B
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